The Triple Threat “Triple Ply Technology” makes this all new,advanced drumhead possible. Three plies of 7mil Nu-Brite drumhead film are molded to act as one powerful, strong snare drumhead. Aquarian’s advanced molding procedures make this Triple Threat TRP13 13" drumhead durable, full sounding and responsive. This coated snare drum batter head can be used in a variety of musical settings but is particularly well suited for Hard Rock and Metal.